Combined fishing and swaging tool



2 Sheets-Sheet 1 A. B. WATKINS Filed May 29, 1929 COMBINED FISHING ANDSWAGING TOOL June 17, 1930.

June 17, 1930.

A; B. WATKINS COMBINED FISHING AND SWAGING TOOL Filed May 29, 1929 2Sheets-Sheet- 2 1w:- un. e 5 7 kw A lnlllnyn-all .Illnll I.

f w An: object of the inventlon 1s; to provlde s v Lcombinedfishinghndswaging tool; that is adaptedto' bsusedfor-removingwsll casings 1-; lapsed;whilsbeing placed in a; welLho'lenAnoth'erobj ect of theZinventjiOn isfuo pro 'gagement with a casing andto provide v s Spring;- constructionwhich williholds the css; 3 ing{engaging parts in contracted;pssitions 7 un-til the t ol is suddenlyjarrd and to hsv e the spring, construction so arranged that if,

"1 40 thegqaisingengaging parts are again contract J "This invenfiionplatesto impriovsmenfis in combinedfishing and swagi ng-toolsland"ni'sy- V beiconsidere'd as an inn;n'evement over the.

prior Patent N0.

@ *constiiliction disclosed in Iny l,'4c5 5r,3-l4, issuedfMay 15 1923. 1

' from well holesai lcl fonswaging'; casings that may havebeCOmea-CQIIaps d; or partially c01- vidsan impi'bved combined fishingand swag ing tool'awhich is adapted to be lowredilnto I T j messing inawell .holelin a collapsedor'conv' tracted 1pnsibi0n' and then expandedinto en- "gajgsment' with:theinterior of a casingby bef'ing;suddenlyfjarred. In ,my priorpatnt' therewis disclosed aconstruction wherein acentrak :ban supports the casing jengaging pa tszind is 'adapted =t0; l-ift these parts-with 7 the ezfisingwhen thecasinghas been canghtr; Acahle isiemployed to hold the parts in con; 1 1tracted 01? "col-lapsed positions so z tha t. (two;

g sintb thewell. I These elements;intsrfers vithg separate elementsarelowered simultaneously e931(31):Otheraind are aptto causeglifiienlty'.

I the improved constnuction'thsuss of the cit-f ble 'fior hold-inglthecasing engaging-:1 aJrtsin-Q contracted: position is entirely el imillaiec1. V Another'object of the invention is to p30- "Slide-{3 11improved combined fishing and 7 swaging rtool havi-ng a centralsuPportin-ghh suspending member carrying caslnggengatging; IPR'I'tS:adapted to be sxpanded into 'en'-' 1 I fsoMBIfinn thrsadsdias indicatedI i is? :Yi w is m la vtos n, ing the tgoLinexpandsd-ipositipm-- s kfill iistmt s venticgil seotio 1 seejsiqn through' as t-0 mb dxing hsn n swhichr-i ofimod fi constrnatisn, ilhsfiratihgfth 43001 Jim;

lapsed L01; contr sqped"pbsitipln Fi -1 s-Wi' im anrt -j- H ezpa d'spotfio err g; ozt a mpa y gv rawins w in as m e e ne enam s 2 t similanp tw hwu ia -th nimpmyw i '0 sp n ng ib-3P: w n

p ndi glg onst n 1 n= Extendi v H the suppgrtinga'ii imoreidinansa 7'verse ipertilres 1 2 531111; 1 the: lfiops' efi which:

, presenvupwarmy,(ima ingbea in -fis es; 7 H

'edz-yvhil'e in" a Well hole that the spring' con; I,

- Wi th phe foregsingz aln'dh then obj i 'fi a in rme gsrm diaears 1a tken Submagainsti the divergent bearing surfaces 14 at which the outerends of the links 22 are pivotally connected as by rivet-s 23. The innerends of the links 22 extend into the apertures 12 and 13 and arepivotally connected thereto as by rivets 24. By reason of the pivotal 7the tops of the apertures 12 and 13. whereas when the casing engagingmembers 17 and 18 are in expanded positions the links bear against thestops limiting the downward movements of the links so that the linkswill not be capable of swinging-past the horizon-p tal. In the inwardlybent upward ends 20 of the casing engaging members there'are formedgrooves which contain inserts 26 forming shoulders indicated at 27, Leafsprings 28 have their upper ends secured as 5; by bolts 29 to the upperend of thesupporting bar 10. A collar 30 is also preferably em,- ployedto assist in holding the upper ends of the leaf springs against thesupporting bar. The lower ends of the leaf springs arebent inwardly toform hooks 31 engageable upon the shoulders 2?. Suitable studs '32 arese-' cured to the: supporting bar 10 and have shoulders or stops 33formedthereon as bynuts. These nuts are adjustable and are =1 adapted tolimitthe inward movements of the leaf springs 28. 'Nuts 34 are screwedonto the outer ends of the studs and coil springs 35 are compressedbetween theleaf springs and the" nuts 34, urging the leaf springsinwardly.

The operation of the improvedcombined fishing andswaging-tool is asfollows: Be-

fore lowering the tool into the well the cas mg engaging members 17 and18 are caused to assume the collapsed positions shown in Fig. 1. In thisposition the hooks 31 'are"engaging the shoulders 27. The device is thenlowered into a well and suitable provision is made for suddenly jarringthe tool" while it is inthe well. This may be accomplished byincorporating a to-olcommonly known as a jar-in the suspending structureor the sus-' pending structure may be connected to a walking beam or apitma-n at the surface.

The particular manner in which the tool is suddenly jarred may be variedand is immaterial in so far as the present invention is concerned. Whenthe tool is lowered into the casing C which it is desired to lift in thewell andreaches the desired location the tool" is given the sudden jarabove referred to, by

having its downward movement suddenly arrested. The' inertia ofthecasing engaging parts 17 and 18 is such that these parts Wlll swingdownwardly springing past the hooks 31 on the leaf springs 28. The toolwill then expand into engagement with the interior of the casing C,after which the casing may be elevated by the supporting or suspendingbar '10. Suitable jaws or slips 36 may be secured to the casing engagingparts 17 and 18 which have upwardly directed teeth to facilitate liftingthe casing by the tool. If for any reason it should be desired to causethe tool to disengage the casing and leave the casing in the hole thecentral supporting bar 10 can be suddenly dropped and ifthis dropping ofthe bar lO'is fast enough the bar 10 will return to the position shownin Fig. l with respect to the casing engaging parts-1'1 andl8. In sodoing, thehooks 31 will slide on the outer surfaces of the inserts 26and ride over the shoulders 27 so that the leaf springs will again-holdthe casing engaging parts in collapsed positions so that the tool can bewithdrawn from the well. a

The construction shown in Figs. 4 and is quite similar to that disclosedin Figs. 1,

2 and 3. This construction comprises a central supporting bar 40carrying the stops 41 and having the transverse apertures in which thelinks 42 are pivoted. The links 42 have their outer ends pivoted as at43 to ears 44 on the interiors of the casing engaging parts 45. Theconstruction differs from that disclosed in Figs. 1 2 and 3 in that theinterior surfaces of the casing engaging parts 45 have hooks orshoulders 46 formed adjacent their upper ends. Leaf springs 47 arefastened as by bolts 48 to'the upper end'of the supporting bar 40; Acollar 49 encircles the upper ends of the leaf springs andthis collar isprovided with outwardly projecting cars 50. The lower ends of the leafsprings have latches 51 hinged'ly connected as at 52 and these latcheshave their ends hooked as at 53, which are engageable upon the hooks or.shoulders 46. Rods 54 slidably extend through the ears 50 andhave leafcoil springs the casingengaging members are in collapsed positions thesesprings are strong enough to retain them there. It vwill' be apprec atedfrom the disclosures made on the drawing thatwhen the links are in theiruppermost positions that these links carry-most of the weight of thecasing engaging members.

However,when the casing engaging members are jarred or urgedintoexpanded positions,

outWa'rdly,,the portion of'theweightof the 1casingengagingmemberscarried bythe links decreases; *Thiscausesanincreased portion ofthe eight of the casing engagingjmem hers-to besustainedfby the springdactuated means sothat althoughthe' springsrinity be; fiexedor;compressedwhen the casingengag-j ing nernbers areexpandedy-the increase in T QupWerd forceeXerted-by-the springlmelan'sis, k more than'loyercomeby the increased portion I ofth'ej Weight vofthe" cesingengaging 1ne1n-" bers left" unsupported byfthe links. When-corporated in the cable which maysu'spenid thefdreft bar-fl; the casingengaging mem berfs 45 by reason. of their momentum swing downwardly andoutwardly: into-engagement rwiththecasing so that the casing may be ,eelevaqted by the tool. Tlielcesing engaging members are prevented?fromexpanding too j far-by: reason of the links 4 2 engeqg'ingthe 5 stops'Athich stops prevent the'links from' o swinging past the, horizontal or"pastjce'nter.

" 'lO-release the casing the draft or supporting n casing engagingmembers to swing; back into 7 collapsed positions with respecttheretonnd ,fjhfihiSf position the. spr ings 5 5- ill be capable 1 ofretaining' the casing engagingjpartsfin "vtheirf'uppermost positions,

V pending means'isnecessery inlowering the .tqolihtblthe 'fvvell; Thetool is capable of '4 beingxexpanded into engagementfwith the '45: v Vlinksxmay have their inner endsfpivotally I .fztste'nedfiftopintlesoiflbeaiings arranged on n n I 7 p I V acentral1supporting memberceslng. engage; ing members disposediabout the supporting.

the'sides of the draft-ban; Animportant ii'eature oflthe' presentinvention resides in the 'faict that'the stops whichli nitthe down- Wardmovements of the links areso arranged V lth atmthese' links haveth'eiridown ward move- I me'nts limited for stopped wherein.theyassu'nie positions materially 'aboveithe hori alwaysieesy to causethe tool'todisengagethe collapsed *or indentedportioirof theycasing-"andthe' toolmaybeiused as e'hammer pound me2nis Tattechedito*t1i;;1+;ppq t" *s'topstfp r; fihgfil111k mime j the supporting ordraft rod 40 is suddenly l I I stopped vor suddenlyjairedin any suitablemanner such as by a cable jarwhich is 'in hers incollapsedpositionabouttheioentrelf support-butadapted-to ellow them 'tomove. V vn intoex'pandedpositionswhen thetoolhtsilisf 1 downward; moyeinentsuddenly-Terrested; I 3 Aifishing': and; sweging tool comprising 'acentrel support, "convex members arranged e aboutsaid supportyli-nkspivotally connect ib'ai 40'inaybe'suddenlydropp'ed, causing-the ingthe--conyexkmembers tothes upport", and n 5 ing the convex members incollapsed position until the tool is jarred and then allowtheln to moveinto expandedjposit-ionsj engage' y V jment withthe Welljcesing. 1From-the above described constructions'it Wi'llbe appreciatedthetenimproved COIII-Y ybined fishing. and swaging tool ,i's providedf whichis so constructed thaton1y one s'us'-- v ing engaging" rnembers t o .thesupporting member Whfereby thecjasingsengagging mein casing by jarringorfsuddenlystopping the dQWIIWtiClffilOVGmellt of the draftorsup-Iportingfban, In snuflljfize tools'the linl-rs22j i it the pportin memberhas itsydoWnward-"n l yhold 'n t in a in -m m e 1 'them'to-inove intofefipended positio'n:.,wl1en; i bar at the} centeributinltrge size toolsthese m r' wh r h 'i ae g engaging me o bers may swing fromcontractedposltions n-i nontaI. By virtue of suchconstruction it isallowthem to move into expanded positions ,When ithe; supporting memberhas. its down 3 to ward" i'moyem'ent 3. suddenly arrested, s aid springmeanslbeing adapted to subsequently, xhold" the casing; engaging membersin contreated Easing and as'sume'its collapsed position'for 2; i Ael.e.\.. 1(. mp .i a central support, convex rneinbers arranged about saidsupport, Links" piyotally connect inothe Iconveximembers' tofthesupportysaidj lin s-hstvingqtheir rnovementsi 1i1nited', ,ndj meansfor-normally holding the; convex mem-i resilient'yieldableimeafnsfornormallyhold f 4.. A- fishingandfsvyaging toolcomprising acentral supporting member,aca,sing en ag-V mg m idispQ edabout th s p timember, links piyotally; oonnecting the as hers may swingirom contractedpositions inf- 1W to expjanidedpositionsfendspring means'nor 5 in eontreeted-positions but adaptedto allowf movement suddenly arrested) emember;- links piyotally, co'nhecting the ces-f ilig enga'gingfmembersto f the; supporting to expanded' positions; spring mean normallyholding the casihgengaging mend} here in} co'ntrawt ed- -positions but]'a'daptedflto v p s t e lii e 1 being e ur ed thereto f-jii. ff q 1. 65A-fishing nd; sweging tool; YcOmpriI V ing a centrel 'supporting membercasing en

